Fix NEWS typo

Author: daviesrob

NEWS

@@ -145,7 +145,7 @@ Bug fixes
 * Fixed the CRLF handling in `sam_parse_worker` method. Thanks to
   Anders Kaplan. (#1149; fixed #1148)
 
-* Included unistd.h and erro.h directly in HTSlib files, as opposed to
+* Included unistd.h and errno.h directly in HTSlib files, as opposed to
   including them indirectly, via third party code. Thanks to
   Andrew Patterson (#1143) and John Marshall (#1145).